Speed difference speed reducer for new energy automobile

Abstract

The invention relates to the technical field of speed difference speed reducers, and particularly discloses a speed difference speed reducer for a new energy automobile, which comprises a shell, a right shell is mounted on the right side of the shell, an input shaft is rotatably connected to the middle of the right shell, a sun gear is fixedly connected to the outer side of the input shaft, and a planet gear is meshed with the outer side of the sun gear; the outer sides of the planet wheels are meshed with an inner gear ring, the outer side of the inner gear ring is fixedly connected with the inner side of the shell, a left shell body is installed on the right side of the shell, the middle portion of the left shell body is rotationally connected with a planet carrier, and the inner side of the planet carrier is rotationally connected with the multiple planet wheels. According to the lubricating device, a medium in the conveying cylinder can be injected into the communicating pipe, lubricating oil is sprayed to the inner side of the inner gear ring, the inner gear ring is lubricated, through the design, the situation that supply of the lubricating oil at the top of the inner gear ring is relatively deficient can be effectively prevented, and therefore the situation that the lubricating effect between the planet wheel and the inner gear ring is poor is prevented.

Description

Technical Field

[0001] This invention relates to the field of speed differential reducer technology, and in particular to a speed differential reducer for new energy vehicles. Background Technology

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as their power source. They represent a fundamental shift from traditional fuel vehicles that rely on internal combustion engines to clean energy sources such as electricity and hydrogen. They are a substitute for traditional fuel vehicles and represent the core trend of the automotive industry's transformation towards environmental protection, efficiency, and sustainability.

[0003] With the development of science and technology, the use of electric vehicles is increasing day by day. In the process of using new energy electric vehicles, planetary gear reducers are needed for their steering systems.

[0004] Currently, during the operation of planetary gear reducers, a certain amount of lubricating oil needs to be injected into the housing. The injection volume is generally controlled at half the volume of the housing cavity. This design is to leave a certain space inside the housing to ensure that the planetary gears can fully agitate the lubricating oil during operation and form an effective circulation. However, this can easily lead to a relative shortage of lubricating oil supply between the planetary gears and the internal gear ring when the planetary gears rotate to the upper part of the housing. This will significantly increase the frictional resistance between the gears, thereby affecting the lubrication effect of the gears inside the reducer and ultimately adversely affecting the overall service life of the planetary gear reducer motor. Summary of the Invention

[0005] The purpose of this invention is to provide a speed differential reducer for new energy vehicles, which can inject the medium inside the conveying cylinder into the inside of the connecting pipe, and then into the inside of the nozzle seat. Subsequently, lubricating oil is sprayed onto the inside of the internal gear ring to lubricate it. This design can effectively prevent the lubricating oil supply at the top of the internal gear ring from being relatively insufficient, thereby preventing poor lubrication between the planetary gears and the internal gear ring, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a speed differential reducer for new energy vehicles, comprising a housing, a right housing mounted on the right side of the housing, an input shaft rotatably connected to the middle of the right housing, a sun gear fixedly connected to the outer side of the input shaft, planet gears meshing with the outer side of the sun gear, an internal gear ring meshing with the outer side of the planet gears, the outer side of the internal gear ring being fixedly connected to the inner side of the housing, a left housing mounted on the right side of the housing, a planet carrier rotatably connected to the middle part of the left housing, and a plurality of planet gears rotatably connected to the inner side of the planet carrier.

[0007] The speed difference reducer also includes an oil delivery assembly disposed inside the housing. The oil delivery assembly includes a delivery cylinder fixedly connected in an annular array inside the planetary carrier. A first piston is movably connected inside the delivery cylinder. A support rod assembly is disposed inside the first piston. The oil delivery assembly also includes a limiting block fixedly connected in an annular array at the top position inside the left housing. A nozzle seat is fixedly connected to the right side of the delivery cylinder. A connecting pipe is fixedly inserted between the top right side of the delivery cylinder and the nozzle seat.

[0008] Preferably, the support rod assembly includes a sleeve fixedly connected to the inside of the first piston, a through rod slidably connected to the inside of the sleeve, a first spring fixedly connected between the right side of the through rod and the sleeve, a toothed plate slidably connected inside the sleeve, a locking block fixedly connected to the bottom of the toothed plate in a linear array, and a groove provided at the top of the through rod, with a blocking plate rotatably connected inside the groove.

[0009] Preferably, the limiting block is inclined on both sides, and the left end of the through rod is rotatably connected to a ball to reduce motion friction.

[0010] Preferably, the bottom of the conveying cylinder is provided with a reset assembly, which includes a cylinder fixedly inserted into the bottom right side of the conveying cylinder, a second piston movably connected to the inner side of the cylinder, a lifting rod fixedly connected to the bottom of the second piston, a base block fixedly connected to the bottom of the inner side of the outer shell, the front and rear sides of the base block being inclined, a second spring fixedly connected between the second piston and the cylinder, a small cylinder fixedly inserted into the side of the cylinder, a third piston movably connected to the inner side of the small cylinder, and a pusher fixedly connected to the side of the third piston.

[0011] Preferably, the top of the pusher is inclined, a connecting frame is fixedly connected to the outer side of the toothed plate, a round shaft is rotatably connected to the bottom of the connecting frame, the outer side of the connecting frame is slidably connected to the sleeve, and a U-shaped spring is fixedly connected between the top of the toothed plate and the sleeve.

[0012] Preferably, a check valve is installed inside the connecting pipe, and an elastic bladder is fixedly connected to the outside of the connecting pipe outside the conveying cylinder. The inside of the elastic bladder is connected to the inside of the connecting pipe. An inclined bar is fixedly connected to the inner annular array of the connecting pipe near the nozzle seat. An elastic membrane is fixedly connected between the outer side of the inclined bar and the inner side of the connecting pipe.

[0013] Preferably, the inclined bar is made of an elastic material, the conveying cylinder and planetary gears are staggered, the limiting blocks are non-uniformly distributed on the left housing, and the spacing between adjacent limiting blocks near the top position is greater than the spacing between adjacent limiting blocks near the bottom position.

[0014] Preferably, the right side of the conveying cylinder is provided with an entry component, which includes recesses on the top and bottom of the right side of the conveying cylinder. A blocking ring is fixedly connected to the inner side of the recesses, a fixed frame is fixedly connected to the left side of the inner side of the recesses, a moving rod is fixedly connected to the inner side of the fixed frame, a blocking plate is fixedly connected to the outer side of the moving rod, and a third spring is fixedly connected between the blocking plate and the fixed frame.

[0015] Preferably, an inclined block is fixedly connected to the right end of the moving rod, a vertical rod frame is slidably connected inside the nozzle seat, a fourth spring is fixedly connected between the vertical rod frame and the nozzle seat, and a pressing block is fixedly connected to the outside of the vertical rod frame at the position corresponding to the inclined block.

[0016] Preferably, a long plate is fixedly connected to the bottom side of the lifting rod, and the bottom of the vertical rod frame is close to the top surface of the end of the long plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. The first piston moves, thereby injecting the medium inside the delivery cylinder into the inside of the connecting pipe, and then into the inside of the nozzle seat. Then, lubricating oil is sprayed onto the inside of the internal gear ring to lubricate it. This design can effectively prevent the lubricating oil supply at the top of the internal gear ring from being relatively insufficient, thereby preventing poor lubrication between the planetary gear and the internal gear ring. 2. The staggered arrangement of the conveyor cylinder and planetary gears can prevent the planetary gears from blocking the lubricating oil from being sprayed onto the internal gear ring during lubrication, thereby improving the effect of the lubricating oil being sprayed onto the inner side of the internal gear ring and further improving the lubrication effect between the planetary gears and the top of the internal gear ring. 3. The top of the internal gear ring is the least lubricated. By setting more limiting blocks at the top of the internal gear ring, the frequency of lubricant spraying at the top of the internal gear ring can be increased, thereby increasing the amount of lubricant sprayed, and thus further improving the lubrication effect between the planetary gear and the top of the internal gear ring. 4. The medium enters the interior of the elastic bladder, causing it to expand. When the first piston stops moving, the elastic force of the bladder allows the lubricating oil temporarily stored inside to enter the nozzle seat and be sprayed out, which can increase the spraying time of the lubricating oil. Furthermore, as the planetary carrier rotates, the spraying range of the lubricating oil can be expanded, further improving the lubrication effect between the planetary gear and the top of the internal gear ring. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an overall structural view of the present invention; Figure 2 This is a side view of the internal structure of the outer casing of the present invention; Figure 3 This is a side view of the left housing structure of the present invention; Figure 4 This is a schematic diagram of a half-section of the outer casing of the present invention; Figure 5 This is a schematic diagram of a half-section of the conveying cylinder of the present invention; Figure 6 This is a schematic diagram of the left half-section structure of the conveying cylinder of the present invention; Figure 7 This is a schematic diagram of a half-section of the cylinder of the present invention; Figure 8 This is a schematic diagram of a half-section of the nozzle holder of the present invention; Figure 9 This is a schematic diagram of a half-section of the elastic bladder of the present invention; Figure 10 This is a partial structural schematic diagram of the through rod of the present invention; Figure 11 This is a schematic diagram of the top right half-section structure of the conveying cylinder of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Outer shell; 2. Right outer shell; 3. Sun gear; 4. Planetary gears; 5. Internal gear ring; 6. Oil delivery assembly; 61. Delivery cylinder; 62. First piston; 63. Limiting block; 64. Nozzle seat; 65. Connecting pipe; 66. Check valve; 67. Elastic bladder; 68. Inclined bar; 69. Elastic diaphragm; 7. Support rod assembly; 71. Sleeve; 72. Through rod; 73. First spring; 74. Toothed plate; 75. Groove; 76. Blocking plate; 77. U-shaped spring; 78. Locking block; 8. Reset assembly; 1. Cylinder; 82. Second piston; 83. Lifting rod; 84. Base block; 85. Second spring; 86. Small cylinder; 87. Third piston; 88. Push frame; 9. Entering assembly; 91. Concave hole; 92. Blocking ring; 93. Fixed frame; 94. Moving rod; 95. Blocking plate; 96. Third spring; 97. Inclined block; 98. Vertical rod frame; 99. Fourth spring; 910. Extrusion block; 911. Long plate; 10. Left housing; 11. Planetary carrier; 12. Connecting frame; 13. Input shaft. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: Please refer to Figures 1 to 11 The present invention provides a technical solution: a speed differential reducer for new energy vehicles, comprising a housing 1, a right housing 2 mounted on the right side of the housing 1, an input shaft 13 rotatably connected to the middle of the right housing 2, a sun gear 3 fixedly connected to the outer side of the input shaft 13, planet gears 4 meshing on the outer side of the sun gear 3, an internal gear ring 5 meshing on the outer side of the planet gears 4, the outer side of the internal gear ring 5 being fixedly connected to the inner side of the housing 1, a left housing 10 mounted on the right side of the housing 1, a planet carrier 11 rotatably connected to the middle part of the left housing 10, and a plurality of planet gears 4 rotatably connected to the inner side of the planet carrier 11.

[0023] In use, the input shaft 13 is connected to the power source. When the power source rotates, the sun gear 3 rotates accordingly. When the sun gear 3 rotates, under the action of meshing between the sun gear 3 and the planet gear 4, the planet gear 4 can revolve around the inner ring of the sun gear 3 along the trajectory of the internal gear ring 5 while rotating on its own axis. The planet carrier 11 is connected to the output shaft, which converts the revolution motion of the planet gear 4 into a low-speed, high-torque output. This technology is the basic working principle of the planetary gear reducer and is a mature existing technology, so it will not be elaborated further.

[0024] The speed differential reducer also includes an oil delivery assembly 6 disposed inside the housing 1. The oil delivery assembly 6 includes a delivery cylinder 61 fixedly connected in an annular array inside the planetary carrier 11. A first piston 62 is movably connected inside the delivery cylinder 61. A support rod assembly 7 is disposed inside the first piston 62. The oil delivery assembly 6 also includes a limiting block 63 fixedly connected in an annular array at the top position inside the left housing 10. The limiting block 63 is disposed in the upper half of the left housing 10. A nozzle seat 64 is fixedly connected to the right side of the delivery cylinder 61. A connecting pipe 65 is fixedly inserted between the top right side of the delivery cylinder 61 and the nozzle seat 64. The nozzle seat 64 faces the inside of the internal gear ring 5.

[0025] As the input shaft 13 continuously inputs rotational kinetic energy, the conveying cylinder 61 rotates accordingly. When the conveying cylinder 61 moves to the lower half, the lubricating oil at the bottom position enters the interior of the conveying cylinder 61. As the input shaft 13 rotates, when the conveying cylinder 61 moves to the upper half of the left housing 10, the support rod assembly 7 is limited by the limiting block 63, which allows the first piston 62 to move, thereby injecting the medium inside the conveying cylinder 61 into the interior of the connecting pipe 65, and then into the interior of the nozzle seat 64. Subsequently, the lubricating oil is sprayed onto the inner side of the internal gear ring 5 to lubricate the internal gear ring 5. This design can effectively prevent the lubricating oil supply at the top position of the internal gear ring 5 from being relatively insufficient, thereby preventing poor lubrication between the planetary gear 4 and the internal gear ring 5.

[0026] It should be noted that the lubricating oil content inside the outer casing 1 is greater than one-half. When the conveying cylinder 61 moves to the upper part, the support rod assembly 7 is limited by the limiting block 63 so as to spray the lubricating oil to the inside of the internal gear ring 5.

[0027] The conveyor cylinder 61 and the planetary gear 4 are staggered. This design can prevent the planetary gear 4 from blocking the lubricating oil from being sprayed onto the inner gear ring 5 when the lubricating oil is sprayed, improve the effect of the lubricating oil being sprayed onto the inner side of the inner gear ring 5, and further improve the lubrication effect between the planetary gear 4 and the top of the inner gear ring 5.

[0028] The limiting blocks 63 are not uniformly distributed on the left housing 10. The distance between adjacent limiting blocks 63 near the top is greater than the distance between adjacent limiting blocks 63 near the bottom. Due to the movement, the lubricating oil will slosh around, and the planetary gear 4 will carry some lubricating oil to a local position above the liquid surface of the internal gear ring 5. This results in the least lubricating oil at the top of the internal gear ring 5. By setting more limiting blocks 63 at the top of the internal gear ring 5, the frequency of lubricating oil injection at the top of the internal gear ring 5 can be increased, thereby increasing the amount of lubricating oil injected, and further improving the lubrication effect between the planetary gear 4 and the top of the internal gear ring 5.

[0029] The support rod assembly 7 includes a sleeve 71 fixedly connected to the inner side of the first piston 62. A through rod 72 is slidably connected to the inner side of the sleeve 71. A first spring 73 is fixedly connected between the right side of the through rod 72 and the sleeve 71. A toothed plate 74 is slidably connected inside the sleeve 71. A locking block 78 is fixedly connected to the bottom of the toothed plate 74 in a linear array. A groove 75 is formed on the top of the through rod 72. A blocking plate 76 is rotatably connected inside the groove 75. The two sides of the limiting block 63 are inclined. A ball for reducing motion friction is rotatably connected to the left end of the through rod 72. A reset assembly 8 is arranged at the bottom of the conveying cylinder 61. The reset assembly 8 includes a cylinder 81 fixedly inserted into the bottom right side of the conveying cylinder 61. The inner side of the cylinder 81 is movable. A second piston 82 is connected, and a lifting rod 83 is fixedly connected to the bottom of the second piston 82. A base block 84 is fixedly connected to the bottom of the inner side of the outer casing 1. The front and rear sides of the base block 84 are inclined. A second spring 85 is fixedly connected between the second piston 82 and the cylinder 81. A small cylinder 86 is fixedly inserted into the side of the cylinder 81. A third piston 87 is movably connected to the inner side of the small cylinder 86. A pusher 88 is fixedly connected to the side of the third piston 87. The top of the pusher 88 is inclined. A connecting frame 12 is fixedly connected to the outer side of the toothed plate 74. A round shaft is rotatably connected to the bottom of the connecting frame 12. The outer side of the connecting frame 12 is slidably connected to the sleeve 71. A U-shaped spring piece 77 is fixedly connected between the top of the toothed plate 74 and the sleeve 71.

[0030] It should be noted that the blocking plate 76 is equipped with a rotating rod, which is rotatably connected to the through rod 72. A torsion spring is fixedly installed between the rotating rod and the through rod 72, so that the blocking plate 76 fits against the left side wall of the groove 75 in the initial state.

[0031] Under the elastic force of the U-shaped spring 77, in the initial state, the bottom of the blocking piece 76 overlaps with the bottom of the locking block 78.

[0032] It should be noted that the frictional force between the first piston 62 and the conveying cylinder 61 is greater than the elastic force of the first spring 73, preventing the first piston 62 from slipping due to the elastic force of the first spring 73. The area of ​​the first piston 62 is designed to be relatively large to ensure that more lubricating oil can be sprayed each time. The thickness of the limiting block 63 is designed to match the spacing between adjacent locking blocks 78. Under the elastic force of the first spring 73, the ball at the end of the rod 72 will adhere to the side wall of the left housing 10. In the initial state, the first piston 62 is located on the left side. When the ball at the end of the rod 72 is limited by the limiting block 63, the blocking plate 76 can no longer deflect to the left because it is attached to the left side wall of the groove 75. When the blocking plate 76 moves to the right, it will squeeze the locking block 78. At this time, the rod 72 moves to the right with the sleeve 71 so that the first piston 62 moves to the right to push the lubricating oil into the connecting pipe 65 and out from the nozzle seat 64.

[0033] When the ball at the end of the blocking plate 76 through the rod 72 has completely passed through the limiting block 63, under the elastic force of the first spring 73 and the friction between the first piston 62 and the inside of the conveying cylinder 61, the rod 72 can move to the left. Since the right side of the blocking plate 76 does not conform to the right side wall of the groove 75, the blocking plate 76 can deflect to the right, thereby allowing the blocking plate 76 to pass through one of the locking blocks 78. Then, under the action of the torsion spring, the blocking plate 76 conforms to the left side wall of the groove 75 again, so that when it is limited by the limiting block 63 next time, the first piston 62 can move again and smoothly spray out the lubricating oil.

[0034] This design allows the first piston 62 to move to the right intermittently, ensuring that each time lubricating oil is sprayed out, the first piston 62 will not move to the left when the limiting block 63 is in position and released. This prevents the first piston 62 from resetting and causing external air to be drawn into the delivery cylinder 61, thus preventing it from affecting the amount of lubricating oil sprayed out subsequently, and further improving the lubrication effect between the planetary gear 4 and the top of the internal gear ring 5.

[0035] When the conveying cylinder 61 rotates to the bottom position, the cylinder 81 moves to the bottom position, and the lifting rod 83 is limited by the bottom block 84, which allows the lifting rod 83 to move upward with the second piston 82. The second spring 85 deforms, and at this time the second piston 82 pushes the medium inside the cylinder 81, allowing the medium to enter the interior of the small cylinder 86, causing the third piston 87 to move to the left with the pusher 88. The inclined part at the top of the pusher 88 first contacts the rotating shaft on the connecting frame 12. The rotating shaft on the connecting frame 12 is squeezed and moves upward, causing the toothed plate 74 to move upward and the U-shaped spring 77 to deform. At this time, the locking block 78 no longer blocks the blocking plate 76. Then, the connecting frame 12 squeezes the first piston 62, causing the first piston 62 to move to the left and reset. At this time, the through rod 72 moves to the right relative to the sleeve 71, and the first spring 73 is compressed. This design can reset the first piston 62 when the conveying cylinder 61 moves to the bottom position, preparing for the next round of oil injection.

[0036] When the lifting rod 83 passes the bottom block 84, under the elastic force of the second spring 85, the lifting rod 83 moves downward with the second piston 82 to reset. At this time, the medium returns to the inside of the cylinder 81. The third piston 87 moves to the right with the pusher 88 to reset. Under the elastic force of the U-shaped spring 77, the connecting frame 12 and the toothed plate 74 are reset. At this time, the bottom of the blocking plate 76 overlaps with the bottom of the locking block 78.

[0037] A check valve 66 is installed inside the connecting pipe 65. An elastic bladder 67 is fixedly connected to the outside of the connecting pipe 65 and the outside of the conveying cylinder 61. The inside of the elastic bladder 67 is connected to the inside of the connecting pipe 65. An inclined bar 68 is fixedly connected to the inner annular array of the connecting pipe 65 near the nozzle seat 64. An elastic membrane 69 is fixedly connected between the outside of the inclined bar 68 and the inside of the connecting pipe 65. The inclined bar 68 is made of an elastic material. The check valve 66 is a mature existing technology and will not be described in detail. Under the action of the check valve 66, external media are not allowed to flow from the connecting pipe 65 into the inside of the conveying cylinder 61. The elastic membrane 69 and the elastic bladder 67 are made of corrosion-resistant materials.

[0038] When the first piston 62 moves to the right once to spray out lubricating oil, due to the large area of ​​the first piston 62, a large amount of lubricating oil quickly enters the interior of the nozzle seat 64. Under the pressure of the lubricating oil flow, the inclined bar 68 and the elastic membrane 69 deform. At this time, the opening of the elastic membrane 69 becomes smaller, which slows down the flow speed of the medium inside the connecting pipe 65, allowing the medium to enter the interior of the elastic bladder 67 and causing the elastic bladder 67 to expand. When the first piston 62 stops moving, under the elastic force of the elastic bladder 67, the lubricating oil temporarily stored inside the elastic bladder 67 can enter the nozzle seat 64 and be sprayed out, which can increase the spraying time of the lubricating oil. Moreover, when the lubricating oil is sprayed out, as the planetary carrier 11 rotates, the spraying range of the lubricating oil can be expanded, further improving the lubrication effect between the planetary gear 4 and the top of the internal gear ring 5.

[0039] An inlet assembly 9 is provided on the right side of the conveying cylinder 61. The inlet assembly 9 includes recesses 91 on the top and bottom of the right side of the conveying cylinder 61. A blocking ring 92 is fixedly connected to the inner side of the recesses 91. A sealing gasket can be installed on the side of the blocking ring 92 to ensure the sealing effect between the blocking ring 92 and the blocking plate 95. A fixed frame 93 is fixedly connected to the left side of the inner side of the recesses 91. A moving rod 94 is fixedly connected to the inner side of the fixed frame 93. A blocking plate 95 is fixedly connected to the outer side of the moving rod 94. A third spring 96 is fixedly connected between the blocking plate 95 and the fixed frame 93. An inclined block 97 is fixedly connected to the right end of the moving rod 94. A vertical rod frame 98 is slidably connected inside the nozzle seat 64. A fourth spring 99 is fixedly connected between the vertical rod frame 98 and the nozzle seat 64. A pressing block 910 is fixedly connected to the outer side of the vertical rod frame 98 at the position corresponding to the inclined block 97. A long plate 911 is fixedly connected to the bottom side of the lifting rod 83. The bottom of the vertical rod frame 98 is close to the top surface of the end of the long plate 911.

[0040] Under the elastic force of the third spring 96, the baffle plate 95 adheres to the baffle ring 92, preventing lubricating oil from spraying out from the concave hole 91 when the first piston 62 moves to the right.

[0041] When the lifting rod 83 is limited, the long plate 911 moves upward accordingly. At this time, the long plate 911 presses against the vertical rod frame 98, the fourth spring 99 is compressed, and the vertical rod frame 98 moves upward with the pressing block 910. At this time, the pressing block 910 presses against the tilting block 97, so that the tilting block 97 moves to the left with the moving rod 94. The blocking plate 95 moves and does not fit against the blocking ring 92, so that the third spring 96 is deformed. At this time, the concave hole 91 is not blocked. It should be noted that when the lifting rod 83 just moves upward, the blocking plate 95 begins to not fit against the blocking ring 92, and then the pusher 88 will contact the first piston 62.

[0042] When the first piston 62 pusher 88 is compressed, external lubricating oil enters through the recess 91. The recess 91 is designed to be located at the top and bottom, which facilitates the lubricating oil filling the interior of the conveying cylinder 61.

[0043] Working principle: The input shaft 13 is connected to the power source. When the power source rotates, the sun gear 3 can rotate accordingly. When the sun gear 3 rotates, under the action of meshing between the sun gear 3 and the planet gear 4, the planet gear 4 can revolve around the inner ring of the sun gear 3 along the trajectory of the internal gear ring 5 while rotating on its own axis. The planet carrier 11 is connected to the output shaft, which converts the revolution motion of the planet gear 4 into a low-speed, high-torque output.

[0044] As the input shaft 13 continuously inputs rotational kinetic energy, the conveying cylinder 61 rotates accordingly. When the conveying cylinder 61 moves to the lower half, the lubricating oil at the bottom position enters the interior of the conveying cylinder 61. As the input shaft 13 rotates, when the conveying cylinder 61 moves to the upper half of the left housing 10, the support rod assembly 7 is limited by the limiting block 63, which allows the first piston 62 to move, thereby injecting the medium inside the conveying cylinder 61 into the interior of the connecting pipe 65, and then into the interior of the nozzle seat 64. Subsequently, the lubricating oil is sprayed onto the inner side of the internal gear ring 5 to lubricate the internal gear ring 5. This design can effectively prevent the lubricating oil supply at the top position of the internal gear ring 5 from being relatively insufficient, thereby preventing poor lubrication between the planetary gear 4 and the internal gear ring 5.

[0045] Under the elastic force of the first spring 73, the ball at the end of the through rod 72 will adhere to the side wall of the left housing 10. In the initial state, the first piston 62 is located on the left side. When the ball at the end of the through rod 72 is limited by the limiting block 63, the blocking plate 76 can no longer deflect to the left because it is attached to the left side wall of the groove 75. When the blocking plate 76 moves to the right, it will squeeze the locking block 78. At this time, the through rod 72 moves to the right with the sleeve 71 so that the first piston 62 moves to the right to push the lubricating oil in. The connecting pipe 65 discharges from the nozzle seat 64. When the ball at the end of the blocking plate 76 through the rod 72 has completely passed through the limiting block 63, under the elastic force of the first spring 73 and the friction between the first piston 62 and the inside of the delivery cylinder 61, the rod 72 can move to the left. Since the right side of the blocking plate 76 does not meet the right side wall of the groove 75, the blocking plate 76 can deflect to the right, thus allowing the blocking plate 76 to pass through one of the locking blocks 78. Subsequently, under the action of the torsion spring, the blocking plate 76 again meets the left side of the groove 75. The sidewall is designed so that when the first piston 62 is again moved by the limiting block 63, the lubricating oil can be sprayed out smoothly. When the conveying cylinder 61 rotates to the bottom position, the cylinder 81 moves to the bottom position, and the lifting rod 83 is limited by the bottom block 84, which allows the lifting rod 83 to move the second piston 82 upward. The second spring 85 deforms, and at this time the second piston 82 pushes the medium inside the cylinder 81, so that the medium enters the interior of the small cylinder 86, causing the third piston 87 to move the pusher 88 to the left. The top of the pusher 88 tilts. The inclined part first contacts the rotating shaft on the connecting frame 12. The rotating shaft on the connecting frame 12 is squeezed and moves upward, causing the toothed plate 74 to move upward and the U-shaped spring 77 to deform. At this time, the locking block 78 no longer blocks the blocking plate 76. Then, the connecting frame 12 squeezes the first piston 62, causing the first piston 62 to move to the left and reset. At this time, the through rod 72 moves to the right relative to the sleeve 71, and the first spring 73 is compressed. This design can reset the first piston 62 when the conveying cylinder 61 moves to the bottom position, preparing for the next round of oil injection.

[0046] When the lifting rod 83 is limited, the long plate 911 moves upward accordingly. At this time, the long plate 911 squeezes the vertical rod frame 98, the fourth spring 99 is compressed, and the vertical rod frame 98 moves upward with the squeezing block 910. At this time, the squeezing block 910 squeezes the tilting block 97, so that the tilting block 97 moves to the left with the moving rod 94. The blocking plate 95 moves and does not fit with the blocking ring 92, so that the third spring 96 is deformed. At this time, the concave hole 91 is not blocked. It should be noted that when the lifting rod 83 just moves upward, the blocking plate 95 begins to not fit with the blocking ring 92. Then the pusher 88 will contact the first piston 62. When the first piston 62 pusher 88 is squeezed, the external lubricating oil enters from the concave hole 91. The concave hole 91 is designed to be set at the top and bottom to facilitate the lubricating oil to fill the interior of the conveying cylinder 61.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A speed differential reducer for new energy vehicles, comprising a housing (1), a right housing (2) mounted on the right side of the housing (1), an input shaft (13) rotatably connected to the middle of the right housing (2), a sun gear (3) fixedly connected to the outer side of the input shaft (13), planet gears (4) meshing with the outer side of the sun gear (3), an internal gear ring (5) meshing with the outer side of the planet gears (4), the outer side of the internal gear ring (5) being fixedly connected to the inner side of the housing (1), a left housing (10) mounted on the right side of the housing (1), a planet carrier (11) rotatably connected to the middle part of the left housing (10), and the inner side of the planet carrier (11) being rotatably connected to a plurality of planet gears (4), characterized in that, The speed difference reducer also includes: The oil delivery assembly (6) is located inside the outer shell (1). The oil delivery assembly (6) includes a delivery cylinder (61) fixedly connected in an annular array inside the planetary carrier (11). A first piston (62) is movably connected inside the delivery cylinder (61). A support rod assembly (7) is arranged inside the first piston (62). The oil delivery assembly (6) also includes a limiting block (63) fixedly connected in an annular array at the top position inside the left outer shell (10). A nozzle seat (64) is fixedly connected to the right side of the delivery cylinder (61). A connecting pipe (65) is fixedly inserted between the top right side of the delivery cylinder (61) and the nozzle seat (64).

2. The speed differential reducer for new energy vehicles according to claim 1, characterized in that: The support rod assembly (7) includes a sleeve (71) fixedly connected to the inside of the first piston (62), a through rod (72) slidably connected to the inside of the sleeve (71), a first spring (73) fixedly connected between the right side of the through rod (72) and the sleeve (71), a toothed plate (74) slidably connected inside the sleeve (71), a locking block (78) fixedly connected to the bottom of the toothed plate (74) in a linear array, and a groove (75) opened on the top of the through rod (72), and a blocking plate (76) rotatably connected inside the groove (75).

3. A speed differential reducer for new energy vehicles according to claim 2, characterized in that: The limiting block (63) is inclined on both sides, and the left end of the through rod (72) is rotatably connected with a ball to reduce motion friction.

4. A speed differential reducer for new energy vehicles according to claim 3, characterized in that: The bottom of the conveying cylinder (61) is equipped with a reset assembly (8). The reset assembly (8) includes a cylinder (81) fixedly inserted into the bottom right side of the conveying cylinder (61). A second piston (82) is movably connected to the inner side of the cylinder (81). A lifting rod (83) is fixedly connected to the bottom of the second piston (82). A base block (84) is fixedly connected to the bottom inner side of the outer shell (1). The front and rear sides of the base block (84) are inclined. A second spring (85) is fixedly connected between the second piston (82) and the cylinder (81). A small cylinder (86) is fixedly inserted into the side of the cylinder (81). A third piston (87) is movably connected to the inner side of the small cylinder (86). A pusher (88) is fixedly connected to the side of the third piston (87).

5. A speed differential reducer for new energy vehicles according to claim 4, characterized in that: The top of the pusher (88) is inclined, and a connecting frame (12) is fixedly connected to the outside of the toothed plate (74). A round shaft is rotatably connected to the bottom of the connecting frame (12). The outside of the connecting frame (12) is slidably connected to the sleeve (71). A U-shaped spring piece (77) is fixedly connected between the top of the toothed plate (74) and the sleeve (71).

6. A speed differential reducer for new energy vehicles according to claim 5, characterized in that: A check valve (66) is installed inside the connecting pipe (65). An elastic bladder (67) is fixedly connected to the outside of the connecting pipe (65) and the outside of the conveying cylinder (61). The inside of the elastic bladder (67) is connected to the inside of the connecting pipe (65). An inclined bar (68) is fixedly connected to the inner annular array of the connecting pipe (65) near the nozzle seat (64). An elastic membrane (69) is fixedly connected between the outside of the inclined bar (68) and the inside of the connecting pipe (65). The inclined bar (68) is made of an elastic material.

7. A speed differential reducer for new energy vehicles according to claim 6, characterized in that: The conveyor cylinder (61) and planetary gear (4) are staggered, and the limiting blocks (63) are unevenly distributed on the left housing (10). The spacing between adjacent limiting blocks (63) near the top position is greater than the spacing between adjacent limiting blocks (63) near the bottom position.

8. A speed differential reducer for new energy vehicles according to claim 7, characterized in that: An entry assembly (9) is provided on the right side of the conveying cylinder (61). The entry assembly (9) includes recesses (91) on the top and bottom sides of the right side of the conveying cylinder (61). A blocking ring (92) is fixedly connected to the inside of the recesses (91). A fixed frame (93) is fixedly connected to the left side of the inside of the recesses (91). A moving rod (94) is fixedly connected to the inside of the fixed frame (93). A blocking plate (95) is fixedly connected to the outside of the moving rod (94). A third spring (96) is fixedly connected between the blocking plate (95) and the fixed frame (93).

9. A speed differential reducer for new energy vehicles according to claim 8, characterized in that: An inclined block (97) is fixedly connected to the right end of the moving rod (94), a vertical rod frame (98) is slidably connected inside the nozzle seat (64), a fourth spring (99) is fixedly connected between the vertical rod frame (98) and the nozzle seat (64), and a pressing block (910) is fixedly connected to the outside of the vertical rod frame (98) at the position corresponding to the inclined block (97).

10. A speed differential reducer for new energy vehicles according to claim 9, characterized in that: The bottom side of the lifting rod (83) is fixedly connected to a long plate (911), and the bottom of the vertical rod frame (98) is close to the top surface of the end of the long plate (911).

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